Mr. Cool DIY 12,000 BTU 5th Gen Multi-Zone Wall Mounted Indoor Unit - R454B

MRCOOL® DIY-12-HP-WMAH-230D25-O DIY® 12K BTU R-454B Ductless Mini-Split Heat Pump
The DIY-12-HP-WMAH-230D25-O 5th Generation MRCOOL® DIY® 12K BTU Ductless Mini-Split Heat Pump provides efficient, quiet heating and cooling for spaces up to 550 sq ft. Designed for true DIY installation, it requires no specialized tools and pairs with the pre-charged 25-foot DIY® Quick Connect® line set (sold separately) containing eco-friendly R-454B refrigerant—eliminating the need for vacuuming. The included DIYPRO® cable removes the need for electrical conduit while adding durability and protection against the elements. Control options include a wireless remote, SmartHVAC app, and voice commands via Amazon Alexa and Google Assistant. The Follow Me function adjusts airflow based on the remote’s location for even comfort, while Dry Mode helps reduce humidity. A Gold Fin® condenser provides superior corrosion resistance, making it ideal for coastal environments. Backed by a limited lifetime warranty, plus 7-year compressor and 5-year parts coverage, this system ensures reliable, year-round performance.

General Information
System Type: Ductless mini-split heat pump system
DIY-12-HP-WMAH-230D25-O - Model: MRCOOL® DIY® 12K BTU
Capacity: 12,000 BTU Cooling / Heating (year-round comfort)
Room Size: Up to 550 sq ft
Operating Modes: Heating, Cooling, and Dry Mode (dehumidification)
Refrigerant: R-454B (pre-charged Quick Connect® line set compatible, sold separately)

Key Features
Easy DIY Installation: No special tools or professional help required
Eco-Friendly Refrigerant: R-454B for reduced environmental impact
DIYPRO® Cable: Durable and eliminates the need for conduit
Smart Controls: Remote, app, and voice control via Alexa & Google Assistant
Follow Me Function: Adjusts airflow based on remote’s location
Humidity Control: Dry Mode removes excess moisture
Corrosion Protection: Gold Fin® condenser for long-lasting durability
Warranty Protection: Limited lifetime warranty, 7-year compressor, 5-year parts

Included Components
DIY-12-HP-WMAH-230D25-O - MRCOOL® DIY® 12K BTU ductless mini-split heat pump
Wireless remote control

Ideal For
Medium-sized rooms or offices needing efficient, reliable heating and cooling with smart features, corrosion resistance, and easy DIY installation.